diff --git a/wp-content/themes/twentytwelve/comments.php b/wp-content/themes/twentytwelve/comments.php
index 299df3dc5..12131274c 100644
--- a/wp-content/themes/twentytwelve/comments.php
+++ b/wp-content/themes/twentytwelve/comments.php
@@ -36,7 +36,7 @@
 		</h2>
 
 		<?php if ( get_comment_pages_count() > 1 && get_option( 'page_comments' ) ) : // are there comments to navigate through ?>
-		<nav id="comment-nav-above">
+		<nav id="comment-nav-above" role="navigation">
 			<h1 class="assistive-text section-heading"><?php _e( 'Comment navigation', 'twentytwelve' ); ?></h1>
 			<div class="nav-previous"><?php previous_comments_link( __( '&larr; Older Comments', 'twentytwelve' ) ); ?></div>
 			<div class="nav-next"><?php next_comments_link( __( 'Newer Comments &rarr;', 'twentytwelve' ) ); ?></div>
@@ -48,7 +48,7 @@
 		</ol>
 
 		<?php if ( get_comment_pages_count() > 1 && get_option( 'page_comments' ) ) : // are there comments to navigate through ?>
-		<nav id="comment-nav-below">
+		<nav id="comment-nav-below" role="navigation">
 			<h1 class="assistive-text section-heading"><?php _e( 'Comment navigation', 'twentytwelve' ); ?></h1>
 			<div class="nav-previous"><?php previous_comments_link( __( '&larr; Older Comments', 'twentytwelve' ) ); ?></div>
 			<div class="nav-next"><?php next_comments_link( __( 'Newer Comments &rarr;', 'twentytwelve' ) ); ?></div>
diff --git a/wp-content/themes/twentytwelve/functions.php b/wp-content/themes/twentytwelve/functions.php
index b1a006074..bd1bee2a4 100644
--- a/wp-content/themes/twentytwelve/functions.php
+++ b/wp-content/themes/twentytwelve/functions.php
@@ -225,7 +225,7 @@ function twentytwelve_content_nav( $nav_id ) {
 	global $wp_query;
 
 	if ( $wp_query->max_num_pages > 1 ) : ?>
-		<nav id="<?php echo $nav_id; ?>">
+		<nav id="<?php echo $nav_id; ?>" role="navigation">
 			<h3 class="assistive-text"><?php _e( 'Post navigation', 'twentytwelve' ); ?></h3>
 			<div class="nav-previous alignleft"><?php next_posts_link( __( '<span class="meta-nav">&larr;</span> Older posts', 'twentytwelve' ) ); ?></div>
 			<div class="nav-next alignright"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">&rarr;</span>', 'twentytwelve' ) ); ?></div>
diff --git a/wp-content/themes/twentytwelve/image.php b/wp-content/themes/twentytwelve/image.php
index f705dd010..9002522d8 100644
--- a/wp-content/themes/twentytwelve/image.php
+++ b/wp-content/themes/twentytwelve/image.php
@@ -35,7 +35,7 @@ get_header(); ?>
 							<?php edit_post_link( __( 'Edit', 'twentytwelve' ), '<span class="edit-link">', '</span>' ); ?>
 						</div><!-- .entry-meta -->
 
-						<nav id="image-navigation">
+						<nav id="image-navigation" role="navigation">
 							<span class="previous-image"><?php previous_image_link( false, __( '&larr; Previous', 'twentytwelve' ) ); ?></span>
 							<span class="next-image"><?php next_image_link( false, __( 'Next &rarr;', 'twentytwelve' ) ); ?></span>
 						</nav><!-- #image-navigation -->